This axle has been build with rigidity and heavy duty in mind so it should work great, you would just need to disconnect original rear axle from the ball joint and connect this new one along with the suspension ball joint connection.

Tested with 8:24 tooth gear ratio + buwizz it can reached about twice the original madoca speed. With 12:20 gear ration it could be faster about 10kmph, but have very little power over obstacles and motor tend to shutdown faster due to protection.